package demo4.controller;

import demo4.mapper.IUserMapper;
import demo4.pojo.User;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;

import java.util.List;
import java.util.Scanner;

@Component
public class UserController {
    @Autowired
    private IUserMapper userMapper;

    public void start() {
        System.out.println("请选择对应的操作，输入序号:");
        System.out.println("1:注册  2:登录  3:修改用户信息  4:用户列表  5:删除用户");
        Scanner scanner = new Scanner(System.in);
        int num = Integer.parseInt(scanner.nextLine());
        switch (num) {
            case 1:
                regUser();
                break;
            case 2:
                loginUser();
                break;
            case 3:
                updateUser();
                break;
            case 4:
                listUser();
                break;
            case 5:
                deleteUser();
                break;
            default:
                System.out.println("其他功能还在完善中，目前404");
        }
    }

    public void regUser() {
        System.out.println("开始处理用户注册");
        System.out.println("欢迎注册");
        Scanner scanner = new Scanner(System.in);
        System.out.println("请输入用户名:");
        String username = scanner.nextLine();
        System.out.println("请输入密码:");
        String password = scanner.nextLine();
        System.out.println("请输入昵称:");
        String nickname = scanner.nextLine();
        System.out.println("请输入年龄:");
        int age = Integer.parseInt(scanner.nextLine());
        if (userMapper.selectByUsername(username) != null) {
            System.out.println("用户名已存在");
        } else {
            User user = new User(null, username, password, nickname, age);
            int num = userMapper.insert(user);
            System.out.println(num > 0 ? "注册成功" : "注册失败");
        }
    }

    public void loginUser() {
        System.out.println("开始处理用户登录");
        System.out.println("欢迎登录");
        Scanner scanner = new Scanner(System.in);
        System.out.println("请输入用户名:");
        String username = scanner.nextLine();
        System.out.println("请输入密码:");
        String password = scanner.nextLine();
        User user = userMapper.selectByUsername(username);
        if (user == null) {
            System.out.println("用户不存在");
        } else {
            if (user.getPassword().equals(password)) {
                System.out.println("登录成功");
            } else {
                System.out.println("密码错误");
            }
        }
    }
    public void updateUser(){
        Scanner scanner = new Scanner(System.in);
        System.out.println("开始处理用户修改");
        System.out.println("请输入用户名:");
        String username = scanner.nextLine();
        System.out.println("请输入密码:");
        String password = scanner.nextLine();
        System.out.println("请输入昵称:");
        String nickname = scanner.nextLine();
        System.out.println("请输入年龄:");
        int age = Integer.parseInt(scanner.nextLine());
        User user = new User(null, username, password, nickname, age);
        int num = userMapper.update(user);
        System.out.println(num > 0 ? "修改成功" : "修改失败");
    }
    public void listUser(){
        System.out.println("用户列表");
        List<User> list = userMapper.selectAll();
        for (User user : list) {
            System.out.println(user);

        }
    }
    public void deleteUser(){
        System.out.println("用户删除");
        Scanner scanner = new Scanner(System.in);
        System.out.println("请输入用户名:");
        String username = scanner.nextLine();
        int num = userMapper.deleteByUsername(username);
        System.out.println(num > 0 ? "删除成功" : "删除失败");
    }
}

